Home / 811,894.72-1,120,424.88-449,317.66

Finding the Fourth Proportional to 811,894.72, 1,120,424.88 and 449,317.66

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Solution

The fourth proportional to 811,894.72, 1,120,424.88 and 449,317.66 is: 620,064.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,894.72 : 1,120,424.88 = 449,317.66 : x
  2. Step 2: Convert to fraction form
    811,894.72/1,120,424.88 = 449,317.66/x
  3. Step 3: Cross multiply
    811,894.72x = 1,120,424.88 × 449,317.66
  4. Step 4: Simplify right side
    811,894.72x = 503,426,685,287.38
  5. Step 5: Solve for x
    x = 503,426,685,287.38/811,894.72
  6. Step 6: Final answer
    x = 620,064.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.